'''
print

# print("Hello World")
#print("hello World","hahaha",sep ="!")
# print("我是xxx",end=" ")
# print("欢迎光临")
#print("苹果","香蕉","桃子",sep=",")
# print("nihao")
#age = 18
#print("用户的年龄是:",age)


a="我今年"+"18"
print(a)
a="张三\\李四"
print(a)
print("张三\n李四\thahahahaahah")
print("小王说\"我叫小王\"")
age=18
print("我今年"+str(age)+"岁")
print("学习使人进步,%s" % '哈')
b="学习,%3s" % '哈'
print(b)
'''
'''
# big =11111111111111111
# print(big)
# price=100_0000_0000
# print(price)
# a=0.1+0.2
# print(a)
# #b="hello %f" %12.3456
# b="hello %.2f" %12.34567
# print(b)

# a="hello %d" %26
# print(a)
# b="hello%05d"%12
# print(b)

# a=10
# print('%o'%a)
# b=10
# print("%x"%b)

# name="zhangsan"
# age=20
# height=1.6
# print(f"我的名字是{name} 我的年龄是{age},我的身高是{height}")
# str='123'*10
# print(str)
# sunny= True
# rainning= False
# print(type(sunny))


result = None
print(result)
print(type(result))

print(type(123))
print(type(3.14))
print(type("北京"))
print(type(True))
print(type(None))

num_str="100"
print(type(num_str))
num_int= int(num_str)
print(num_int)
'''
'''
num_str='123'
print(num_str)
print(type(str))
num_int=int(num_str)
print(num_int)
print(type(num_int))

age=input("你的年龄是:")
age=int(age)
print(age+1)
'''
numfloat="3.14159"
print(numfloat)
print(type(numfloat))
numint=int(numfloat)
print(numint)
print(type(numint))